{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the fairness and justice of PoS mining be ensured in the blockchain?","a":"Randomly selecting validation nodes: To avoid a specific node controlling the blockchain network, PoS mining systems usually randomly select a certain number of validation nodes to verify transactions. In this way, every node has a chance to become a validator, ensuring  the fairness of the network."}]}],"pr":"d2c9f99f0e91d280a96bb9b66e78b2d979af6dc3b12c22f2effd323bc254bb89"}